code: def testDefaultNoDtype(self):
      self._testDefaultBasic(None)
  
imports: from absl.testing import parameterized
  import numpy
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import dtypes
  from tensorflow.python.ops import array_ops
  from tensorflow.python.platform import test
label_desc: Use image node_id 5 for calling the OneHotTest obj's underlying member method code with example usage: obj.testDefaultNoDtype() without return types